How can I export a blender model as a sprite sheet?
Here's a possible workaround without using a script:

Add an empty to the center of you scene (or the center of your object, where ever you want the camera to rotate around):


Parent the camera to the empty (CtrlP):


With the empty selected, insert a rotation keyframe for the Z axis on frame 1 by hovering over the value and pressing I or right clicking and selecting Insert Single Keyframe:


On frame 33 (one frame past frame 32), insert another rotation keyframe for the Z axis setting the Z rotation to 360, then set the scene End frame to 32:


Switch to the graph editor:


In the graph editor, press T and select linear to remove the smooth interpolation of the keyframe:


Render


The empty will be rotated to exactly 90° on frame 9, 180° on frame 17, and 270° on frame 25:

Here is an example blendfile.